diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6da744..ee1f43b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,4 +35,6 @@ target_link_directories(${PROJECT_NAME} PRIVATE
 # Add sources to executable
 target_sources(${PROJECT_NAME} PRIVATE
     src/main.c
+    src/input_handler.c
+    src/timer_counter.c
 )